ip of members joining or in helpdesk ect

i have got a lot of members who have not confirmed emails and want to have a field there so i can check their ip as well.

how do we get ( without looking at profile ) members ip for joining up and in helpdesk messages?

i know we can on dash board do last sign in and see ips, but i want ips information as above

Remember members IP address can change with each login to your site.

thats fine, but i need one on sign up and helpdesk

as a lot of people have been joining this week and seem under the same area so want to know if same ip